See it if you like great music and great dancing but don't need an exciting plot to follow.
Don't see it if you need a funny or heartwarming or any kind of story to a musical.
See it if you grew up with the "Wizard of Oz" and want to know, what REALLY happened! And if you're into great stories and fantastic music.
Don't see it if you're not into witches and magic and stuff...
See it if you like the more classical musical such as "Chicago", for example, and if you like Glenn Close.
Don't see it if you want to see a lot of dancing in a Broadway show.
See it if you want to see one of the funniest shows on Broadway!
Don't see it if you don't have any humor or if you're a minor (not the best language... ;) ).